This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Key changes include:
- Addressed an issue in which adding vulnerable boot level components to the Secure Boot disallow list (dbx) may cause the system not to start.
We strongly recommend you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). Installing servicing stack updates (SSU) make sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft security fixes.
How to get this update
Method 1: Windows Update
This update is available through Windows Update. It will be downloaded and installed automatically.
Method 2: Microsoft Update Catalog
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
Method 3: Windows Server Update Services
This update is also through Windows Server Update Services (WSUS).
There are no prerequisites to apply this update.
You don't have to restart your computer after you apply this update.
Update replacement information
This update replaces the previously released update KB 4509094.